20116259 has 4 divisors (see below), whose sum is σ = 20129304. Its totient is φ = 20103216.

The previous prime is 20116249. The next prime is 20116279. The reversal of 20116259 is 95261102.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 95261102 = 2 ⋅47630551.

It is a cyclic number.

It is not a de Polignac number, because 20116259 - 2²⁴ = 3339043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20116249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3842 + ... + 7415.

It is an arithmetic number, because the mean of its divisors is an integer number (5032326).

Almost surely, 2^20116259 is an apocalyptic number.

20116259 is a deficient number, since it is larger than the sum of its proper divisors (13045).

20116259 is a wasteful number, since it uses less digits than its factorization.

20116259 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13044.

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 20116259 is about 4485.1152716513. The cubic root of 20116259 is about 271.9667049427.

The spelling of 20116259 in words is "twenty million, one hundred sixteen thousand, two hundred fifty-nine".